Evaluation of a Potential Wave Division Multiplexer (WDM) for Use in the IRSTD

reportActive / Technical Report | Accession Number: ADA223945 | Open PDF

Abstract:

The design of a Wave Division Multiplexer WDM was evaluated. This design could be used in the ANSAR-8 infrared search and target designation system currently being developed by the Navy. The design featured a spherical grating with a radius of curvature of 115mm to test the capability of multiplexing 180 channels. The grating was able to couple light from laser diodes at four different wavelengths 780.0nm, 789.0nm, 848.0nm and 849.0nm. The most significant factor in coupling efficiency was astigmatism. This decreased the demultiplexing coupling efficiency by a factor of 500. The source linewidths were measured to assess the possibility of wavelength slicing. The capability to multiplex 180 channels is possible but cannot yet be achieved due to the lack of light sources that cover the wavelength range required for a 180 channel system. Keywords Wave division multiplexing Fiber optics.

Author(s):
Fernan, Paul T.
Author Organization(s):
NAVAL POSTGRADUATE SCHOOL MONTEREY CA
Descriptive Note:
Master's thesis
Pagination:
0060

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited.

RECORD

Collection: TR
Subject Terms
Joint Capability Areas:
JCA_5_Command and Control; JCA_1.2.7_Experimentation; JCA_4.3_Maintain; JCA_5.3_Planning; JCA_1.3.2_Personnel Management; JCA_1.2.5_Lessons Learned
Modernization Areas:
Microelectronics
Communities of Interest:
Air Platforms
Descriptor(s):
*ASTIGMATISM, *TARGET DESIGNATORS, *LASERS, FREQUENCY, EFFICIENCY, GRATINGS(SPECTRA), LIGHT SOURCES, MULTIPLEXING, FIBER OPTICS, DIODES, COUPLING(INTERACTION), SPHERES
Field(s)/Group(s):
Electrooptical and Optoelectronic Devices
Report Date:
1989 Dec 01